Medical Definition of Histamine h1 antagonists

1. Drugs that selectively bind to but do not activate histamine h1 receptors, thereby blocking the actions of endogenous histamine. Included here are the classical antihistaminics that antagonise or prevent the action of histamine mainly in immediate hypersensitivity. They act in the bronchi, capillaries, and some other smooth muscles, and are used to prevent or allay motion sickness, seasonal rhinitis, and allergic dermatitis and to induce somnolence. The effects of blocking central nervous system h1 receptors are not as well understood. (12 Dec 1998)



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Lexicographical Neighbors of Histamine H1 Antagonists

hissyfit
hist
hist-
histamin
histaminaemia
histaminase
histaminases
histamine
histamine-fast
histamine agents
histamine agonist
histamine antagonists
histamine blocker
histamine flush
histamine h1 antagonists (current term)
histamine h2 antagonists
histamine headache
histamine liberators
histamine n-methyltransferase
histamine release
histamine shock
histamine test
histaminergic
histamines
histaminic cephalalgia
histaminic headache
histamins
histaminuria
histangic

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